Windows does not allow multiple programs to access the same COM port. Bypass this restriction by using TCP/Com to split a single COM port into multiple virtual COM ports. This allows all your serial communications programs to access the same data.

Intuitive Multi-Document Interface

In the TCP/Com window just select the com port number and the serial communications parameters for your serial device and enter an IP address and a socket number. Then activate! It's that easy! Com port data will appear at the IP address and data from an IP port will appear at a real or virtual com port.